D90 Temp gauge: Range? - Defender Source
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  #1  
Old September 4th, 2015, 02:49 PM
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Chris
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D90 Temp gauge: Range?

Might anyone know what the temperature sweep is on the stock temp gauge? '94 D90.
Mine will get into red, but an IR thermometer reads only 200F at the sending unit.
Thanks
G
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Old September 4th, 2015, 03:47 PM
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Jason England
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Quote:
Originally Posted by gilby View Post
Might anyone know what the temperature sweep is on the stock temp gauge? '94 D90.
Mine will get into red, but an IR thermometer reads only 200F at the sending unit.
Thanks
G
Might be a bad ground ... there are 3 wires on the gauge ...

ground .. jump this direct to your battery -ve.

12V ... jump this direct to your battery +ve

and the sensor ... run a replacement /temp wire

that way you can replace the wires one at a time and figure whats causing the excessive sweep. If it still does it then the gauge of sensor are faulty. Sensor can be tested with a multi meter for resistance. Gauge I'm not sure.

Many people move to VDO at this point!
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  #3  
Old September 4th, 2015, 03:51 PM
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Chris
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Thanks.
The sensor is new, so I'm assuming bad gauge.
I can't imagine the stock gauge reads red at 200F
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Old September 4th, 2015, 04:02 PM
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Jason England
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Is the behavior the same for pre and post new sensor?

If this happened when you put the sensor in, it could be the range on the sensor is wrong and doesn't match the gauge.
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #5  
Old September 4th, 2015, 05:46 PM
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Chris
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Was having issues before the new sensor, but not as dramatic as after the sensor. I would never peg red before the new sensor; just about 3/4.
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Old September 4th, 2015, 06:26 PM
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Charles Galpin
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Sounds like you don't have the right sensor. 200 degrees should be just past center. I'd take the opportunity to switch to a VDO gauge with matching sensor so you see the actual temps
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Old September 5th, 2015, 09:34 AM
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Chris
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Thanks for your thoughts, Jason and Charles.
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